Sewing-machine.



D. S. SEYMOUH.

SEWING MACHINE.

APLicATloN EILED :UNE 12, 1909 L-Mm Patented July 6,1915.

4 SHEETS-SHEET I.

Milli I D. S. SEYMOUR.

SEWING MACHINE.

APPLICATION FILED IuNE I2. 1909.

Patented July 6, 1915 4 SHEETS-SHEET 2 D. S. SEYMOUR.

SEWING MACHINE.

APPLICATION FILED IIINE'IZ. w09.

Patented J'uly 6, 1915.

D. S. SEYMOUR.

SEWING MACHINE. APPLICATION man JUNE 12. 190g;

Patented. July 6, 1915.

4 SHEETS-SHEET 4.

www.

attozmu S :UDLEY S. SEYMQUR, OF GAK PARK,

LLINOIS, ASSIGNOR TO UNION SPECIAL EACIENE SEVvNG-IVLACHINE.

Implication ler June 12. 1909.

lie it known that l, Dolmar S. SEYMOUR, :i citizen of the llnited States, residing sit (hilt lurh., in the county of Cook, finite of l'ilinois. here invented certain new und useiul Improvements in acwing-liln hines, of which the ii'ollou'ing is :i description, reference being had to the iccou'ipnnying draw'- in;r :ind to the letters and figures of reifercnoe nnlrked thm-con.

The invention relates to new and useful iinprovemei'its in serving machines. and more especially to sewing machines ot the tuhulnr work support type, although it vvill he ohvious that from certain aspects of the invention. my improvement-I may be embodied in any type ot' sewing machine.

An. object o' the in\ention is to provide a. feeding mechanism with :i 'feed dog which is moved forward in substantially :i right .line

to Jfeed the material, and is then quickly dropped henenth the work support and returned to the forward end ot its stroke, Where it. quickly raised ehore the Work support into engagement 'with the material,

ready for its feeding action.

further object of the invention is to provide n tnhular Work support with :i feeding' mechanism which is locutedvin the work support sind Which has feed dog1 which may be given e forward movement in suhstnntially :i right line to feed the material.

A further ohject of the invention is to provide n serving machine haring :i tubular work support with n. leedingy mechanism including e feed den" which may he given relatively7 longf feeding? stroke.

These and other objects will in port oh vious :and will in part he hereinafter more fully described.

in the drawings which show hv' Way of illustration one embodiment oi the inven tion. Figure l is :i tirent side elevation vvith the parts in section, o't :i sewing machine embodying; mv invention. is' n, top plan viewiof the tubular worlr'support with the cloth plate and top portion ren-loved. Fig. 3 is nn end view oi" the work support with the end plete :ind cloth plete reu'ioijed. Fig". 4 is n similar vievr showing" the perils in :mother position. Fin'. is :i sectional view on the iine 3-5 ot' Fig: 2. fi is :i eco tional vienr on thc line til-t5 ot Fig. T is :i sectional view on the line 77ot Q, 8 is :i detail View of the feed. dog" Specification of Letters Patent.

view ol the Serial No. 501,817.

supporting'frame. F

tzitented July 6, lltl.

9 is a diagrammatic view ,showing the essential elements of the 'feeding ineclmnisin;

l: lling* lever; il

12 is :in end view of t pir.

secu ring' Fig. l0 is :i sectional means for the feedis :i similar view of a and Fig. he eccentric connecting The sewing nrnchine :is herein illustrated,

comprises n l)eats :in over-hanging standard l, from which pronrin 2. The needle bar 3 izsirrvine' the needle 41, reeiprocates in the 'toi-wurd end et the overhangmg arm 2, and

receives its movements 5 which in turn is nected with :in eccen 7 of the machine.

These from the needle lever operated by :i link 6, contric on the main shaft parts are of the usuel construction and will not need further description.

i herein illust port tl is carried hv zit/ed. :i tuhulir Work sup the standard Il, and projects underneath the needle head of the Ine.-

chine. llhc main sh the standard l enl into .support and carries crank disk 9. Cope 4- is :i looper 10.

:ift 7 extends through the tubular Work at its forward end a rating With the needle @and looper l() is carried hv n loeper carrier llv which is pivoted to a.

hruchct carried bv the forward end of a.

i n The other end l B n.

shaft 12. mounted port. vided 'with u fork 'i4 on the shaft 7.'.

fork i3 will he oscilhited :1nd

oscilhzi'. the hi'ncltet und give to :i voi ohne n'iovement.

the looper the oeoilhited on i ts Stippel-tino bracket h v means m" :i linr 'if which ig lo, 'The roch' shfii'ft Pou u hruelret 'l' mi pivoted to :i roch' shaft lo is in turn pivoted d is oscilluted through :i linir if? connected to the needle lever eX- tension Th is iooper operating' mechanism 'forme no port etn the presentinvention und vvili not looper thread is led t sion 2l und 'through needle lever througrl'i suitzvlfile `n'uid 'he needle sion ll., :and on the i'ieedle ler` r. thro-:ul passes to the top o'F the needle h. i

lidy improved Lteedi en tension nn d is need Vlfln'ffher descrii'ition. The

/lirougfh n suitable ten- .euide evcs 22 on the then led e eres 29a to the looper.

thread posses 'through the tenthronfh the `guide eves 24. 24.,

"roin 'thence the needle usual needle eve :it the :uid to the needle. ng ineelninism consists et o ill@

of a feed'dog 25 which operates through the usual slot in the throat plate to engage and move the material. Said feed dog is carried by a feed dog supporting frame 26 (see Figs.- 2 and 8). The feed ,dog supporting frame 26 is pivoted at its front end to a rocking arm 27 which in' turn is pivoted at 28 to a bracket 29 formed on the inner.

Figs. 2 and 7) which work coperates witha cam 37 carried by the main shaft 7. As the cam 37 rotateswith the main shaft 7, the shaft 35 will be oscillated raising and lowering the link 31 and thereby raising and lowering the front end of the feed dog carrying frame 26. The feed dog is given its forward and backward movements from the crank disk 9 on the end of the shaft 7. The

crank disk carries a crank pin 38 (see Fig. 6)' whieh=may be adjustable in the usual manner in theslotted crank disk, in order to change the throw of the crank pin. Coperating with the crank pin is a link 39, which carries at its other end an eccentric pin 40 which is adjustably mounted in a bearing 41 in the feed dog carrying frame. As the shaft 7 rotates, the feed dog carrying frame will be moved back and forth through the link 39.

In Fig. 9 I have shown in outline the arrangement of the links and levers for moving my feed dog. Starting with the parts as shown in this view the feed dog will be at the forward end of its stroke by reasonl of the fact that the crank pin 38 has reached its extreme throw in one direction. At this time, the arm 31 is at substantially the upper part of its stroke and the cam 37 is comin into action to oscillate the arm 34. A cam 37 as clearly shown in Fig. 7, is provided with two comparatively long concentric portions so that in the oscillation of the fork 36, it will be moved quickly in one di-A rection, given a comparatively long dwell, then moved quickly in the opposite. direction and then given a long dwell. When the crank pin has reached the position shown in Fig. 9, the feed dog is at a dwell so far as its forward movements are concerned, and at this time, the cam 37 operates by swinging the arm 34 downward, to quickly lower the feed dog beneath the work support. The feed dog is then returned to the right hand end of its stroke as viewed in Fig. 9 by the continued movement of the crank pin 38. Just as the feed dog is reaching the extreme right hand throw, the earn. 37 again operates to quickly raise the lever 34 and bring the feed dog into engagement with the material. A concentric portion of the cam then comes into coperation with the fork 36 and the feed dog will be held substantially at ay dwell so far as its vertical movements are concerned, while it is being moved forward to feed the material. Inasmuch as the feed dog carrying frame 26 is supported by the link 31 and arm 27 which swing together back and forth from one side of a vertical line to the other side thereof, it will be evident that the oscillating movement of these parts will have little or no effect upon the movements of the feed dog.

By providing a feed dog operating mechanism wherein the feed dog substantially' completes its forward movement before it is dropped beneath the work support, I am able to provide a feeding mechanism for a cylinder machine, wherein the feed dog will have a comparatively long straight movement for feeding the material.

In certain classes of work, such for example, as closing the mouths of filled bags, it is very desirable to use a feeding mechanism in connection with a tubular work support, wherein the feed dog has a comparatively long straight movement so that the mouth of the bag will be fed rapidly and positively and that comparatively long stitches may be made which are sullicient for closing the mouth of the bag.

It w`ll be` seen that the rocking arm for supporting one end of the feed dog carrying frame, is located at one side of the tubular work support, while the rock shaft for giving the up and down movements to the feed dog, is located at the other side of the tuhular work support. By Nthis arrangement of parts, l am able to place within the restricted available space in a cylinder bed plate, a four 'motion feed dog in which the feed dog may be given a substantially straight line feedingr movement. The looper mechanism itwill be noted is supported on a shaft located between the rock shaft and rocking arm ef the feeding mechanism, and the link for vibrating the looper also eX- tends between these parts. lt will also he noted that the main shaft terminates with the crank pin carrying disk so that a `suflicient space is afforded for the locating of; the feed dog carrying frame. l have also made the upper face o f ihe work support or bed plate flat so that theI feed dog may he given a straight line movement which is .suhstantially parallel with the upper ,face of the Work support. The arm 3l for raising and lowering the feed dog, is secured to the shaft 35 by means of set screws 34 and 8l". The shaft has a flattened portion. and it will readily be seen that by adjusting the man,

sot screws, the arm he shifted on the shaft 35, thus raising or lowering the feed dog relative to thc Work support.

ln Fig. ll, l have Shown the arma cured to the shaft by spot screws 3l. and 34, which engage receeses 34e. By ady l Y j' )listing the spot screws, the arin fl-lmay he shifted on thc shaft 2:55, and the workingposition oit the feed dog, relative to the work Support varied. rll`hc eccentric Anin 40, as above noted, adjustahly secured to the feed dog carryingl traine 253 hy screws l0". Bur-adjusting' the position ot the pin Iil), the Workingposition ot the .te-ed dog relative to the needle may he veried.

Having thus particularly deecrihed iny invention, what l claim ae nei' and desire to secure by Lettere Patent, isz- 1. sewing machine including in co1nl ination, a tubular Work support haring a flat fabric-supporting' surface, a rotating shaft extending into said work enig-port and terminating short ot the end thereof, Aleed dogr carrying i'ran'ie located in the space heyond the end ot said shat't, a rocking :mn supporting one end of said fram, a gleed dog carried adjacent the other end oli' said trame7 means for raising and lmvering said rcither.

end of said freine, and means indciiendent of, the rocking arin tor ctn'inectingl said shaft to said trainel for inmf'ing t ie saine hack and forth, the means for moving the traine hack and forth and the means rer raising lowering the end of the trarne 'being t so as to giveA a enh tantially straight .toednioifeinent to saro toed dog:

2. A sewing machine including in conahi.- nation, a tubular Work support, a feeding mechanism located Within said work snpport including a feed dog, a feed dog carryingl trarne, a rocking' arrn located at one iside of the Work support, ,A pivcted to said traine, a rock shaft located at the other side` of the Work support, and. connected. to said frame, a looper, a leonor carrier, a rock shaft for snpporting' said loo'per carrier located 1cetween saidnamed roch shaft and Said rocking anni.

S. sewing machine inoinding` in cornhination, a tubular work: support, a feeding mechanism located Within said 'work support including a feed dog, a feed doe' carrying frame, a rocking arm located at one side of the Work support, and pirated to sind frame, a rock shaft located at the other side ci the Work support and connected to said traine,

`a looper, a looper carrier, a rock shaft for supporting said looper carrier located between said tiret named rock shaft and said rocking arm, and means rrier, ineludin@ ic toad do yraisingv and lowering4 saidleed dog` Said means lacing timed relative to said crank pin, whereby said 'leed doe" is gwen a substantially dat feeding movement.

A sewing machine includingl 1n combiu nation, a tubular work Support, a rotating'` shaft extending; into said work summit and terminatingshort ot the end thereof, a 'feed dog carrying; iframe located at the end of .said Sl'iat't, a crank pin carried by said shaft, a linl: connected to said crank pin and to said traine, a rocking arm supporting one end oi said traine, a leed dog; carried h v thc other end oil? said traine, a link connected to Said leed don` carrying frame adjacent its 'treo end, and means connected to the lower end of said link for hodily'raising and lowering the sarnc.

6. llt sewing' machine including' in combi# nation, a tubular 'work support, a rotating shaft ending" into said work Support and terminating short of the end thereof, a feed ydogr carrying frame, located at the end of to the lower end oli link for raising; and loweringn the said link.

T. i feeding' mechanism including in cornhination a feed dog' carrying frame, a rocking arin to which said frame is pivoted at one end, a feed dog carried hy the other end oi said frame. moans pivoted to the trame hetwe-e t the feed doggand the rocking arm, for moving, said frame hack and forth, and means connected to the feed dog carrying frame between the feed dog and the rockn 'ing arm, ttor moving said feed dog carrying. frame up and down.

8. A :feeding mechanism, including in combination, a'teed dog carrying iframe, a rocking arm to which said traine is pivoted at one end, feed dog` carried hy the other end of said frame, a. link pivoted to said frame hetween the feed dog; and the rocking arni, means moving said linl whereby said reed dena carrying tranieis moved hack a d :tort-l r "ffl, M2 u .n a second inni pivoted to said eerl. Y rnc, netwccc the :ecd do@ nien, and menne connected -arin carried by said roclcishaft and pivoted lilik to said link for oscillating the frame upon its pivotal connection with the rocking arm.

9. A feeding mechanism including in combination, a feed dog carrying frame, a. feed dog mounted thereon, a rocking arm to which one end of the frame is pivoted, a link pivoted to the frame, and lying substantially parallel therewith, a rotating crank'pin Connected to said link for movy ing the frame back and forth, a second link and additional means to position said feed' dog horizontally in the work support whereby its feeding position may be varied, said positioning means includingl an eccentric pin having engagement with said feed bar.

11. In a feeding mechanism, a feed bar Hex.

and a feed dog carried thereon, means to give said feed dog a Work-feeding move' ment and a vertical movement, said vertical movement having means'of adjustment, said means for moving the feed dog vertically including a rocking shaft, an arm carried thereon, and means carried by said arm to adjust it upon said shaft.

12. In a feeding mechanism, a feed bar and a feed dog carried thereon, means to give said feed dog a work-feeding and avertical movement, said vertical movement havingmeans of adjustment including a shaft, an arm carried thereon, said arm haying' set screws located upon. opposite sides of a central line passing through said shaft, whereby in the loosening ofy one screw and the tightening-ofthe other, the arm is moved 'angularly upon its support.

i In testimony whereof I affix my signature in presence of two witnesses.

DUDLEY s. SEYMOUR.,1

Witnesses:

\ C. MCNEIL, A. C. ABEL. 

